Long-term Debt (Details) (USD $)	3 Months Ended	6 Months Ended	48 Months Ended
	Jun. 30, 2012	Jun. 30, 2012	Mar. 29, 2015	Mar. 31, 2012	Dec. 31, 2011	Jun. 30, 2011
Debt Instrument [Line Items]
Borrowings under credit facility	$ 24,259,000	$ 24,259,000			$ 19,888,000
Total long-term debt	34,176,000	34,176,000			30,725,000
Less: Current maturities	(2,027,000)	(2,027,000)			(1,936,000)
Total maturities due after one year	32,149,000	32,149,000			28,789,000
Interest Rate Description		The obligations under the credit facility are guaranteed by our parent company and certain named subsidiaries and secured by a pledge of substantially all of our assets. The obligations bear interest at either (i) the Base Rate, which for any day is a per annum rate equal to the greater of (a) the Prime Rate for such day; (b) the Federal Funds Rate for such day, plus 0.50%; or (c) LIBOR for a 30 day interest period as determined on such day, plus 1.0%, plus the Applicable Margin (as discussed below);or (ii) at LIBOR for the applicable interest period, plus the Applicable Margin; and (iii) if any other obligation (including, to the extent permitted by law, interest not paid when due), at the Base Rate in effect from time to time, plus the Applicable Margin for Base Rate Revolver Loans (as defined in the credit facility).
Applicable Margin (in hundredths)	1.50%	1.50%				1.25%
Effective percentage rate on promissory note, range, minimum (in hundredths)		5.50%
Effective percentage rate on promissory note, range , maximum (in hundredths)		7.60%
Term of rental agreement for capital lease obligation (in months)		60
Capital Lease of Revenue Generating Equipment	3,000,000	3,000,000
Effective interest rate on the capital lease (in hundredths)	6.80%	6.80%
Line of Credit Facility [Line Items]
Maturity date of credit facility			Mar. 29, 2015
Borrowing base availability under the credit facility	49,200,000	49,200,000		44,500,000
Remaining borrowing availability under credit facility	19,900,000	19,900,000
Line of Credit Facility, Increase (Decrease) in Gross Availability	4,700,000
Secured Committed Credit Facility [Member]
Line of Credit Facility [Line Items]
Aggregate availability of credit facility	50,000,000	50,000,000
Standby Letters of Credit [Member]
Line of Credit Facility [Line Items]
Borrowing base availability under the credit facility	5,000,000	5,000,000
LIBOR Loan [Member]
Line of Credit Facility [Line Items]
Interest rate of loans outstanding under credit facility (in hundredths)	2.80%	2.80%
Bank Base Rate Loan [Member]
Line of Credit Facility [Line Items]
Interest rate of loans outstanding under credit facility (in hundredths)	4.80%	4.80%
Notes Payable [Member]
Debt Instrument [Line Items]
Total long-term debt	7,245,000	7,245,000			7,989,000
Capitalized Lease Obligations [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 2,672,000	$ 2,672,000			$ 2,848,000